Refrigerant guiding pipe and heat exchanger having refrigerant guiding pipe

Abstract

A refrigerant guiding pipe for a heat exchanger having: a pipe wall in which an inner chamber is formed, an opening formed in the pipe wall, and a refrigerant guiding wall portion, at least a part of the refrigerant guiding wall being disposed to be substantially inclined with respect to an axial direction of the refrigerant guiding pipe to guide refrigerant passing through the opening. The refrigerant guiding wall portion is a recessed wall section depressed towards the inner chamber. The refrigerant guiding pipe can distribute and guide refrigerant well to help avoid non-uniform distribution of refrigerant due to layering of gaseous refrigerant and liquid refrigerant

1 . A refrigerant guiding pipe for a heat exchanger, comprising:
 a pipe wall in which an inner chamber is formed;   an opening formed in the pipe wall; and   a refrigerant guiding wall portion, at least a part of the refrigerant guiding wall being disposed to be substantially inclined with respect to an axial direction of the refrigerant guiding pipe to guide refrigerant passing through the opening,   wherein the refrigerant guiding wall portion is a recessed wall section depressed towards the inner chamber.   
     
     
         2 . The refrigerant guiding pipe of  claim 1 , wherein
 at least a part of an edge of the refrigerant guiding wall portion is separated from the pipe wall to form the opening.   
     
     
         3 . The refrigerant guiding pipe of  claim 1 , wherein
 at least a middle portion of the refrigerant guiding wall portion in a direction perpendicular to the axial direction of the refrigerant guiding pipe is inclined with respect to the axial direction of the refrigerant guiding pipe, at least a portion of the refrigerant guiding wall portion is inclined with respect to the axial direction of the refrigerant guiding pipe, or the refrigerant guiding wall portion is inclined with respect to the axial direction of the refrigerant guiding pipe.   
     
     
         4 . The refrigerant guiding pipe of  claim 1 , wherein at least the middle portion of the refrigerant guiding wall portion in the direction perpendicular to the axial direction of the refrigerant guiding pipe has a section along the axial direction of the refrigerant guiding pipe, and the section has a shape of a substantially straight line, or is substantially straight; or the refrigerant guiding wall portion has a section along the axial direction of the refrigerant guiding pipe, and the section has a shape of a substantially straight line, or is substantially straight. 
     
     
         5 . The refrigerant guiding pipe of  claim 1 , wherein at least the middle portion of the refrigerant guiding wall portion in the direction perpendicular to the axial direction of the refrigerant guiding pipe is positioned at an angle of more than zero degree and less than 90 degrees with respect to the axial direction of the refrigerant guiding pipe, or
 the refrigerant guiding wall portion is positioned at an angle of more than zero degree and less than 90 degrees with respect to the axial direction of the refrigerant guiding pipe.   
     
     
         6 . The refrigerant guiding pipe of  claim 1 , wherein at least the middle portion of the refrigerant guiding wall portion in the direction perpendicular to the axial direction of the refrigerant guiding pipe has a section along the axial direction of the refrigerant guiding pipe, and the section comprises at least one substantially straight line-shaped segment and/or at least one substantially curve-shaped segment, or
 a section of the refrigerant guiding wall portion along the axial direction of the refrigerant guiding pipe comprises at least one substantially straight line-shaped segment and/or at least one substantially curve-shaped segment.   
     
     
         7 . The refrigerant guiding pipe of  claim 1 , wherein at least an end of the refrigerant guiding wall portion in the axial direction of the refrigerant guiding pipe is separated from the pipe wall to form the opening. 
     
     
         8 . The refrigerant guiding pipe of  claim 1 , further comprising:
 a first end of the refrigerant guiding pipe to be connected with refrigerant piping, and a second end of the refrigerant guiding pipe opposite to the first end,   wherein the second end of the refrigerant guiding pipe is open in use.   
     
     
         9 . A heat exchanger, comprising:
 a first manifold;   a second manifold spaced away from the first manifold by a certain distance;   a heat exchange tube having two ends respectively connected with the first manifold and the second manifold; and   a refrigerant guiding pipe, comprising:
 a pipe wall in which an inner chamber is formed, 
 an opening formed in the pipe wall, and 
 a refrigerant guiding wall portion, at least a part of the refrigerant guiding wall being disposed to be substantially inclined with respect to an axial direction of the refrigerant guiding pipe to guide refrigerant passing through the opening and the refrigerant guiding wall portion comprising a recessed wall section depressed towards the inner chamber, 
 wherein the first manifold and/or the second manifold has the refrigerant guiding pipe therein. 
   
     
     
         10 . The heat exchanger of  claim 9 , wherein the refrigerant guiding pipe further comprises:
 a first end of the refrigerant guiding pipe to be connected with refrigerant piping, and a second end of the refrigerant guiding pipe opposite to the first end, and   a non-opening range from the first end of the refrigerant guiding pipe to a position spaced away from the first end by a certain distance,   wherein a ratio of a number of the heat exchange tubes in the non-opening range to a number of all the the-heat exchange tubes corresponding to the refrigerant guiding pipe is more than about 20% and less than about 99%.   
     
     
         11 . The heat exchanger of  claim 10 , wherein at least a part of an edge of the refrigerant guiding wall portion is separated from the pipe wall to form the opening. 
     
     
         12 . The heat exchanger of  claim 10 , wherein
 at least a middle portion of the refrigerant guiding wall portion in a direction perpendicular to the axial direction of the refrigerant guiding pipe is inclined with respect to the axial direction of the refrigerant guiding pipe, at least a portion of the refrigerant guiding wall portion is inclined with respect to the axial direction of the refrigerant guiding pipe, or the refrigerant guiding wall portion is inclined with respect to the axial direction of the refrigerant guiding pipe.   
     
     
         13 . The heat exchanger of  claim 10 , wherein at least the middle portion of the refrigerant guiding wall portion in the direction perpendicular to the axial direction of the refrigerant guiding pipe has a section along the axial direction of the refrigerant guiding pipe, and the section has a shape of a substantially straight line, or is substantially straight; or the refrigerant guiding wall portion has a section along the axial direction of the refrigerant guiding pipe, and the section has a shape of a substantially straight line, or is substantially straight. 
     
     
         14 . The heat exchanger of  claim 10 , wherein at least the middle portion of the refrigerant guiding wall portion in the direction perpendicular to the axial direction of the refrigerant guiding pipe is positioned at an angle of more than zero degree and less than 90 degrees with respect to the axial direction of the refrigerant guiding pipe, or
 the refrigerant guiding wall portion is positioned at an angle of more than zero degree and less than 90 degrees with respect to the axial direction of the refrigerant guiding pipe.   
     
     
         15 . The heat exchanger of  claim 10 , wherein at least the middle portion of the refrigerant guiding wall portion in the direction perpendicular to the axial direction of the refrigerant guiding pipe has a section along the axial direction of the refrigerant guiding pipe, and the section comprises at least one of at least one substantially straight line-shaped segment and at least one substantially curve-shaped segment, or
 a section of the refrigerant guiding wall portion along the axial direction of the refrigerant guiding pipe comprises at least one of at least one substantially straight line-shaped segment and at least one substantially curve-shaped segment.   
     
     
         16 . The heat exchanger of  claim 10 , wherein at least an end of the refrigerant guiding wall portion in the axial direction of the refrigerant guiding pipe is separated from the pipe wall, thereby forming the opening. 
     
     
         17 . The heat exchanger of  claim 10 , further comprising:
 a first end of the refrigerant guiding pipe to be connected with a refrigerant piping, and a second end of the refrigerant guiding pipe opposite to the first end,   wherein the second end of the refrigerant guiding pipe is open in use.